Presentation on theme: "Joints Joints - Articulation Classified –Extent of their function –Degree of movement –Structure - based on the presence or absence of joint cavity and."— Presentation transcript:
Joints - Articulation Classified –Extent of their function –Degree of movement –Structure - based on the presence or absence of joint cavity and supporting tissue.
Joints Classified by Movement Synarthrosis - Immovable joint - generally fibrous joints. Amphiarthrosis - Limited movement - generally cartilaginous joints. Diarthrosis - Freely movable - generally synovial joints.
Fibrous Joints Lack joint cavity Lack fibrous connective tissue Generally immovable in adults Types –Suture –Syndesmoses –Gomphoes
Fibrous Joints Suture - tight union - movement rarely occurs. Skull bones Syndoesmoses - bones are close together but not touching, held together by collagenous fibers or ligaments. Radius & Ulna. Gomphoses - peg and socket. Tooth
Suture Joint Movable in children Immovable in adults Only in skull
Syndesmoses Joints Bones close together but not touching Held together with collagenous fibers. Example –Inferior tibiofibular –Ulna & Radius
Gomphoses Joints Fibrous joint made up of a peg and socket. Example - teeth
Synarthrodial- Immovable Joint Fibrous
Cartilaginous Joints Bones united by a plate of hyaline cartilage or fibrocartilaginous disk Lack joint cavity Permits little or no movement Examples –Synchondrosis - epiphyseal –Symphysis - pubis, manubriosternal, invertebral joints
Cartilaginous Joints Synchondrosis- Temporary joint composed of hyaline cartilage joining diaphysis and epiphysis. Symphysis - Bony surfaces bridged by flattened plates and disks of fibrocartilage.
Amphiarthrodial - Cartilaginous Joints
Synovial Joints Most of permanent joints Allows the greatest range of movement Ends of bones are covered with smooth catilage. Lubricated and nourished by thick fluid called synovial fluid Has a joint cavity
Synovial Joints - Diarthrosis 4 essential structures of synovial joints Synovial Cavity - has a space between the two articulating bones. Articular cartilage Articular capsule - lines the synovial cavity and outer layer of capsule. Ligaments
Types of synovial joints Hinge - elbow Pivot - radioulna joint Condyloid (modified ball-and-socket) knuckle joint except the thumb. Gliding - vertebrae, carpal and tarsal Saddle - Thumb Ball-and-socket - shoulder, hip
Ball and Socket
Joints When things go Wrong!
When things go WRONG! Arthritis - inflammation of the joint Osteoarthritis - degenerative arthritis, wear and tear arthritis, most common. Rheumatoid arthritis - most debilitating form of chronic arthritis, involves inflammation of the synovial membrane. Gouty arthritis - Gout, metabolic disease resulting in needle-shape crystals
When things go WRONG! Bursitis - inflammation of one or more bursae Dislocation - 2 articulating surfaces become separated. Sprain - tearing of ligaments that follows the sudden wrench of a joint.
Power Point Club foot (1) Flat feet 296pg (1) Bunion (1) Corns (1) Fractures pg (11) Curvatures of spine pg (3)
TEST Chapter 7,8,9 Names of bones Types of bones - long, short, etc……(pg.230) Definitions of joints - match typed of joints (pg.312) Diseases and abnormalities - definitions. Bones with features; foramen,ridges ( Worksheets) Articulations Axial and appendicular skeleton. Types of fractures - comminuted, compound, greenstick, impacted. (pg. 299) Facts about bones!! STUDY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!